# SDR AALA201909069007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 2019
- Submitted: September 6, 2019
- Operation: Air carrier
- Aircraft: N201UU
- Make and model: Boeing 757-2B7
- Registry model: [Boeing 757-2B7](https://openairdocs.org/model/boeing-757-2b7) (OpenAirDocs)
- Aircraft serial: 27810
- Aircraft time: 78,689 hours, 26,506 cycles
- System (JASC): [5220 · Emergency Exits](https://openairdocs.org/jasc/5220)
- Part: Reservoir
- Part number: 80330034
- Part serial: R21851
- Condition: Low Pressure
- Location: L4 Door
- Part time: 15,419 hours, 3,182 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: S
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201909069007

## Discrepancy

AIRCRAFT NOT GROUNDED: MAINTENANCE REPORTS L4 DOOR EMERGENCY POWER SPRING CYLINDER PRESSURE 0. REPLACED EMERGENCY POWER SPRING CYLINDER AT L4 DOOR IAW AMM 52-11-33.

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